Elias stood there thinking and nervous about telling his naive wife his true identity, what if she hates him or leaves him or if their relationship melted away?
But then he jumped up with a scream of happiness. The fact he just confirmed she was here, which was terrible but safe in a place more like heaven than where he was!
And it was considerate of her to give him the role of protecting her which indicated no matter what she still loved.
All the sadness he was feeling was gone, what was left was great happiness and zeal to move forward. He needed to be strong enough before she started her Third Trial so that he can go on to save her when the need arises.
For some sadistic reason, Elias wanted her to be in danger for that would warrant himself to be summoned! But first, he needs to be stronger than now.
After the adrenaline calmed down, the hunger came back with fatigue!